ICD-10 Code H31.421 – Serous choroidal detachment, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H31.421 – Serous choroidal detachment, right eye
What it is
H31.421 identifies a serous choroidal detachment in the right eye. It means fluid has collected beneath the choroid, causing the layer to separate from the underlying tissue.
Clinical signs
Typical findings include a shallow, dome-shaped elevation of the choroid on eye examination. Vision may be blurred or distorted, and clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents serous choroidal detachment specifically in the right eye. It may appear in postoperative, inflammatory, or other documented ocular settings, but you should code only what is explicitly stated.
If the record does not clearly identify the eye or does not specify a serous detachment, check documentation before assigning H31.421.
Do not use for
Do not use this code for left-eye or bilateral choroidal detachment, or for non-serous types unless documented. Check documentation if the note describes retinal detachment or another choroidal disorder instead.
Coding tip
Confirm laterality and the word “serous” in the provider note before coding H31.421.